Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Basic
Net income	$ 6,805	$ 5,781	$ 20,902	$ 18,765
Weighted-average common shares outstanding (in shares)	14,040,089	14,348,151	14,203,369	14,373,243
Basic earnings per share (in dollars per share)	$ 0.48	$ 0.40	$ 1.47	$ 1.31
Diluted
Net Income	$ 6,805	$ 5,781	$ 20,902	$ 18,765
Weighted-average common shares outstanding (in shares)	14,040,089	14,348,151	14,203,369	14,373,243
Effect of dilutive restricted stock and stock appreciation rights (in shares)	237,080	198,336	239,016	200,723
Weighted-average common shares outstanding assuming dilution (in shares)	14,277,169	14,546,487	14,442,385	14,573,966
Diluted earnings per share (in dollars per share)	$ 0.48	$ 0.40	$ 1.45	$ 1.29